[Arm-netbook] [eoma68] mini desktop pc
luke.leighton at gmail.com
Wed Dec 4 12:22:00 GMT 2013
On Wed, Dec 4, 2013 at 9:14 AM, joem <joem at martindale-electric.co.uk> wrote:
> On Tue, 2013-12-03 at 11:35 +0000, luke.leighton wrote:
>> On Tue, Dec 3, 2013 at 10:00 AM, joem <joem at martindale-electric.co.uk> wrote:
>> > 1. You need the internal 3.3V line brought out from EOMA68 to one of the
>> > pins for general circuit design reasons.
>> not going to happen. sorry. designs need to take that into account.
>> apart from anything there will be boards in the future that don't
>> *have* a 3.3V line (for whatever reason).
> Not a request.
> The 3.3V line is the pull up line for GPIO lines.
> Something to get right in next revision.
joe: it's still not going to happen. there are not enough pins. I/O
board designs will need to generate the correct 3.3v compatible TTL
levels by having the correct regulators on the I/O board. as 3.3v TTL
levels are the same everywhere this is perfectly feasible.
there is therefore not only enough pins available, but also this is a
also there is the issue of backwards-compatibility if there are
revisions. any further revisions require complexity to be introduced
into future revisions of both CPU Cards *and* I/O boards. that is not
going to happen.
therefore please accept that i have carefully considered what you
have said and the answer is no.
>> > 2. Not sure about the USD75. Is it going to get cheaper any time soon?
>> in quantity 10k and above, probably yes. because they will be
>> designed differently. and be a different product entirely. so... no.
>> plus remember that $75 is for *two* boards, and tax, and shipping,
>> and testing, and packaging, and profit (a small one) and everything
> Its $75 for CPU board and meb + shipping + taxes.
yes. QiMod Ltd is acting as the distributor, not the end-user
supplier. the choice of price for the pair of boards, being supplied
by a 3rd party, is completely outside of QiMod Ltd's control.
>> > 3. At the moment there is no way to cooperate with everyone using
>> > closed sources PCB packages and the list of hardware mistakes
>> > are piling up as cost somewhere. This is driving a wedge through
>> > all things good and possible. I only want to work in open sourced
>> > KiCAD. The limitations are not significant
>> they are a complete show-stopper for someone with my limited
>> available time, lack of knowledge and insufficient expertise. simple
>> as that.
> KiCAD web site has added a lot more video tutorials recently.
the tutorials are not relevant, here. joe: i've been working with
KiCAD for around 4 to 5 years. i am familiar with it. compared to
PADS it has completely inadequate functionality and design rule safety
regarding the speed at which designs can be created: that is
completely irrelevant if i am creating completely wrong designs, isn't
so until someone takes over designs who has the required knowledge
and expertise, i have to stick with "safe" software packages.
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